<?php
namespace app\common\library\helper;

use PHPExcel;
use PHPExcel_IOFactory;
use PHPExcel_Reader_Excel2007;
use PHPExcel_Reader_Excel5;
use PHPExcel_RichText;

class OfficeHelper{

    /**
     * 数据导出
     * @param array $title 标题行名称
     * @param array $data 导出数据
     * @param string $fileName 文件名
     * @param string $savePath 保存路径
     * @param bool $isDown 是否下载
     * @return string   返回文件全路径
     * @throws \Exception
     */
    public static function exportExcel($title=array(), $data=array(), $fileName='', $savePath='./', $isDown=false){

        try{
            vendor("PHPExcel.PHPExcel");
            $obj = new PHPExcel();

            //横向单元格标识
            $cellName = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'AA', 'AB', 'AC', 'AD', 'AE', 'AF', 'AG', 'AH', 'AI', 'AJ', 'AK', 'AL', 'AM', 'AN', 'AO', 'AP', 'AQ', 'AR', 'AS', 'AT', 'AU', 'AV', 'AW', 'AX', 'AY', 'AZ');

            $obj->getActiveSheet()->setTitle('sheet');   //设置sheet名称

            $_row = 1;   //设置纵向单元格标识

            if($title){

//                $_cnt = count($title);
//                $obj->getActiveSheet()->mergeCells('A'.$_row.':'.$cellName[$_cnt-1].$_row);   //合并单元格
//                $obj->setActiveSheetIndex(0)->setCellValue('A'.$_row, '数据导出：'.date('Y-m-d H:i:s'));  //设置合并后的单元格内容
//                $_row++;

                $i = 0;
                foreach($title AS $v){   //设置列标题

                    $obj->setActiveSheetIndex(0)->setCellValue($cellName[$i].$_row, $v);
                    $i++;

                }

                $_row++;

            }

            //填写数据
            if( $data ){

                $i = 0;

                foreach($data AS $_v){

                    $j = 0;

                    foreach($_v AS $_cell){

                        $obj->getActiveSheet()->setCellValue($cellName[$j] . ($i+$_row), $_cell);

                        $j++;

                    }

                    $i++;

                }

            }

            //文件名处理
            if(!$fileName){

                $fileName = uniqid(time(),true);

            }

            $objWrite = PHPExcel_IOFactory::createWriter($obj, 'Excel2007');

            if($isDown){   //网页下载

                header('pragma:public');

                header("Content-Disposition:attachment;filename=$fileName.xls");

                $objWrite->save('php://output');exit;

            }

            $_fileName = iconv("utf-8", "gb2312", $fileName);   //转码

            $_savePath = $savePath.$_fileName.'.xlsx';

            $objWrite->save($_savePath);

            return $savePath.$fileName.'.xlsx';

        }catch( \Exception $e ){
            Helper::logError( $e );
            throw new \Exception();
        }

    }

    /**
     *  数据导入
     * @param string $file excel文件
     * @param int $sheet
     * @return array 返回解析数据
     * @throws \PHPExcel_Exception
     * @throws \PHPExcel_Reader_Exception
     */

    public static function importExecl($file='', $sheet=0){

        vendor("PHPExcel.PHPExcel");

        $file = iconv("utf-8", "gb2312", $file);   //转码

        if(empty($file) OR !file_exists($file)) {

            die('file not exists!');

        }

        $objRead = new PHPExcel_Reader_Excel2007();   //建立reader对象

        if(!$objRead->canRead($file)){

            $objRead = new PHPExcel_Reader_Excel5();

            if(!$objRead->canRead($file)){

                die('No Excel!');

            }

        }

        $cellName = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'AA', 'AB', 'AC', 'AD', 'AE', 'AF', 'AG', 'AH', 'AI', 'AJ', 'AK', 'AL', 'AM', 'AN', 'AO', 'AP', 'AQ', 'AR', 'AS', 'AT', 'AU', 'AV', 'AW', 'AX', 'AY', 'AZ');

        $obj = $objRead->load($file);  //建立excel对象

        $currSheet = $obj->getSheet($sheet);   //获取指定的sheet表

        $columnH = $currSheet->getHighestColumn();   //取得最大的列号

        $columnCnt = array_search($columnH, $cellName);

        $rowCnt = $currSheet->getHighestRow();   //获取总行数

        $data = array();

        for($_row=1; $_row<=$rowCnt; $_row++){  //读取内容

            for($_column=0; $_column<=$columnCnt; $_column++){

                $cellId = $cellName[$_column].$_row;

                $cellValue = $currSheet->getCell($cellId)->getValue();

//                $cellValue = $currSheet->getCell($cellId)->getCalculatedValue();  #获取公式计算的值

                if($cellValue instanceof PHPExcel_RichText){   //富文本转换字符串

                    $cellValue = $cellValue->__toString();

                }

                $data[$_row][$cellName[$_column]] = $cellValue;

            }

        }

        return $data;

    }

}